I used duck tape to cover the ego threads and gap on the adapter to bring it out level with the top-ring and my devices. She is one tall lady.I assume it's the 510 threads that are stripped? That's what happened to my v2.
Not the most elegant solution but you could try something like this: eGo to [eGo] Adapter
I sold two damaged Vamos in the classies quite a while ago. The buyer was eager to recycle them for friends.